| Osprey Vessel Management Limited | Agriculture & fishing | 2010 |
| OT Kart Spares Ltd | Wholesale & retail | 2025 |
| Outhill Partnership | | 1993 |
| Outlook Medical International Limited | Professional & scientific | 2025 |
| Outlook Water Limited | Administrative & support | 2026 |
| Outskirts Media Ltd | Information & communication | 2022 |
| OV3 Ltd | Agriculture & fishing | 2015 |
| OVO Guru Ltd | Other services | 2019 |
| P C Tech (Peterhead) Ltd | Mining & quarrying | 2012 |
| P J MCL Limited | Agriculture & fishing | 2012 |
| P&R Jernslett Ltd | Agriculture & fishing | 2016 |
| Paatikiuk Ltd | Wholesale & retail | 2025 |
| Palace Hotel (Peterhead) Limited | Hospitality | 2000 |
| Paragon Adventures Ltd | Hospitality | 2024 |
| Paragon Projects NES Ltd | Professional & scientific | 2024 |
| Park Drill Ltd | Administrative & support | 2026 |
| Parkhill Bess Ltd | Real estate | 2025 |
| Parkhill Design Ltd | Wholesale & retail | 2022 |
| Pasco (Scotland) Ltd. | Professional & scientific | 2006 |
| Paul Mclean Fishing Ltd | Agriculture & fishing | 2019 |
| Pergendum Ltd | Mining & quarrying | 2020 |
| Permapaper Ltd | Wholesale & retail | 2024 |
| Peterhead & District Group Training Limited | Education | 1995 |
| Peterhead Basketball Club Bloo Toon Bulls CIC | Arts & recreation | 2026 |
| Peterhead Car Wash Ltd | Other services | 2023 |
| Peterhead Fieldweld Services Ltd | Manufacturing | 2021 |
| Peterhead Fish Company Limited | Other services | 2016 |
| Peterhead Fishermen NET Manufacturers Limited | Agriculture & fishing | 1996 |
| Peterhead Foot Clinic Ltd | Health & social care | 2009 |
| Peterhead Football Club Limited | Arts & recreation | 1993 |
| Peterhead Hardware & DIY Limited | Wholesale & retail | 1997 |
| Peterhead Health Centre Consortium Limited | Wholesale & retail | 1976 |
| Peterhead Joiners Limited | Construction | 2025 |
| Peterhead Marine Electrics Limited | Construction | 1987 |
| Peterhead Material Control Services Limited | Other services | 2022 |
| Peterhead Motors Limited | Wholesale & retail | 1988 |
| Peterhead Nails&Spa Ltd | Other services | 2022 |
| Peterhead Property Letting Company Limited | Real estate | 2003 |
| Peterhead Property Rentals Ltd | Real estate | 2025 |
| Peterhead Scottish Week Ltd | Arts & recreation | 2010 |
| Peterhead Seafoods Limited | Wholesale & retail | 1998 |
| Peterhead Smile Centre Ltd | Health & social care | 2024 |
| Peterhead Snooker Company Limited | Arts & recreation | 1983 |
| Peterhead Store Ltd | Wholesale & retail | 2024 |
| Peterhead Taxis Limited | Transport & logistics | 2022 |
| Petroles Well Operations Limited | Administrative & support | 2014 |
| PGA Property Co Ltd | Real estate | 2025 |
| PHD Car Sales Ltd | Wholesale & retail | 2022 |
| Phipps Factor Ltd | Wholesale & retail | 2024 |
| Phoenix Rigging Ltd | Professional & scientific | 2024 |
| Phonetech Peterhead Limited | Wholesale & retail | 2015 |
| Photography by Georgia Limited | Other services | 2017 |
| Piccolo Pizza Peterhead Ltd | Hospitality | 2024 |
| Pink Petal Floral Design Ltd | Wholesale & retail | 2018 |
| Pipeline Integrity Group Limited | Professional & scientific | 2015 |
| Pipeline Integrity Management Solutions Limited | Professional & scientific | 2016 |
| Pitfour Properties Ltd | Real estate | 2026 |
| Planning Solutions International Ltd | Administrative & support | 2017 |
| Plastiprint 3D Ltd. | Manufacturing | 2014 |
| Platform 5 Cafe Ltd | Hospitality | 2020 |
| Platinum Business Services Ltd | Professional & scientific | 2019 |
| Platinum Properties Peterhead Limited | Administrative & support | 2022 |
| Pleasingly Caring Ltd | Health & social care | 2026 |
| PMO Hive Group Limited | Construction | 2025 |
| Pod-Tec Limited | Mining & quarrying | 2024 |
| Pomprint Designs Ltd. | Manufacturing | 2003 |
| Portcullis Company Ltd | Hospitality | 2022 |
| Poseidon Fishing Limited | Agriculture & fishing | 2018 |
| Ppla Management Ltd | Real estate | 2024 |
| PPS (Scotland) Ltd. | Administrative & support | 2010 |
| Praedium Properties Limited | Construction | 2012 |
| Precision Inspection Limited | Mining & quarrying | 2010 |
| Premier Apartments Peterhead Ltd | Real estate | 2024 |
| Premier Hatton Market Ltd | Wholesale & retail | 2021 |
| Premier Inflatables Ltd | Arts & recreation | 2017 |
| Pressley Properties Ltd | Real estate | 2023 |
| Pride N Joy (Peterhead) Limited | Administrative & support | 2003 |
| Prime Aspect Ltd. | Real estate | 2006 |
| Prime Cribs Ltd | Real estate | 2025 |
| Pro-Core HQ Limited | Arts & recreation | 2021 |
| Probashi PAY Ltd | Information & communication | 2024 |
| Project 777 Limited | Professional & scientific | 2023 |
| Proxis Computers Ltd. | Wholesale & retail | 2002 |
| PT5 Ltd | Construction | 2023 |
| Pulse HR Ltd | Administrative & support | 2013 |
| Pure Cleaning (Aberdeenshire) Ltd | Administrative & support | 2021 |
| Pygmy Love Limited | Agriculture & fishing | 2024 |
| Qhse Scotland Limited | Professional & scientific | 2021 |
| Qikbit Ltd | Wholesale & retail | 2025 |
| Qing's Property Limited | Real estate | 2021 |
| Quality Solutions (Scotland) Limited | Professional & scientific | 2009 |
| Qualtech (Scotland) Ltd. | Mining & quarrying | 1998 |
| Quantum Aberdeen Limited | Professional & scientific | 2018 |
| Quantum Data Solutions Ltd. | Information & communication | 1999 |
| Quantum Property Developments Ltd. | Construction | 2003 |
| Quantus Services Scotland Limited | Agriculture & fishing | 2013 |
| Quick Snip TOO Ltd. | Other services | 2002 |
| Quiksling Limited | Professional & scientific | 2013 |
| R & G Whyte Ltd | Construction | 2026 |
| R & J Seafish Ltd. | Wholesale & retail | 2002 |